/**
* Loads the drawing. By convention this method is invoked on a worker thread.
*
* @param progress A ProgressIndicator to inform the user about the progress of the operation.
* @return The Drawing that was loaded.
*/
protected Drawing loadDrawing(ProgressIndicator progress) throws IOException {
Drawing drawing = createDrawing();
if (getParameter("datafile") != null) {
URL url = new URL(getDocumentBase(), getParameter("datafile"));
URLConnection uc = url.openConnection();
// Disable caching. This ensures that we always request the
// newest version of the drawing from the server.
// (Note: The server still needs to set the proper HTTP caching
// properties to prevent proxies from caching the drawing).
if (uc instanceof HttpURLConnection) {
((HttpURLConnection) uc).setUseCaches(false);
}
// Read the data into a buffer
int contentLength = uc.getContentLength();
InputStream in = uc.getInputStream();
try {
if (contentLength != -1) {
in = new BoundedRangeInputStream(in);
((BoundedRangeInputStream) in).setMaximum(contentLength + 1);
progress.setProgressModel((BoundedRangeModel) in);
progress.setIndeterminate(false);
}
BufferedInputStream bin = new BufferedInputStream(in);
bin.mark(512);
// Read the data using all supported input formats
// until we succeed
IOException formatException = null;
for (InputFormat format : drawing.getInputFormats()) {
try {
bin.reset();
} catch (IOException e) {
uc = url.openConnection();
in = uc.getInputStream();
in = new BoundedRangeInputStream(in);
((BoundedRangeInputStream) in).setMaximum(contentLength + 1);
progress.setProgressModel((BoundedRangeModel) in);
bin = new BufferedInputStream(in);
bin.mark(512);
}
try {
bin.reset();
format.read(bin, drawing, true);
formatException = null;
break;
} catch (IOException e) {
formatException = e;
}
}
if (formatException != null) {
throw formatException;
}
} finally {
in.close();
}
}
return drawing;
}
public TestType1CFont(InputStream is) throws IOException {
super();
setPreferredSize(new Dimension(800, 800));
addKeyListener(this);
BufferedInputStream bis = new BufferedInputStream(is);
int count = 0;
ArrayList<byte[]> al = new ArrayList<byte[]>();
byte b[] = new byte[32000];
int len;
while ((len = bis.read(b, 0, b.length)) >= 0) {
byte[] c = new byte[len];
System.arraycopy(b, 0, c, 0, len);
al.add(c);
count += len;
b = new byte[32000];
}
data = new byte[count];
len = 0;
for (int i = 0; i < al.size(); i++) {
byte from[] = al.get(i);
System.arraycopy(from, 0, data, len, from.length);
len += from.length;
}
pos = 0;
// printData();
parse();
// TODO: free up (set to null) unused structures (data, subrs, stack)
}
private Icon makeIcon(final String gifFile) throws IOException {
/* Copy resource into a byte array. This is
* necessary because several browsers consider
* Class.getResource a security risk because it
* can be used to load additional classes.
* Class.getResourceAsStream just returns raw
* bytes, which we can convert to an image.
*/
InputStream resource = MyImageView.class.getResourceAsStream(gifFile);
if (resource == null) {
System.err.println(MyImageView.class.getName() + "/" + gifFile + " not found!!.");
return null;
}
BufferedInputStream in = new BufferedInputStream(resource);
ByteArrayOutputStream out = new ByteArrayOutputStream(1024);
byte[] buffer = new byte[1024];
int n;
while ((n = in.read(buffer)) > 0) {
out.write(buffer, 0, n);
}
in.close();
out.flush();
buffer = out.toByteArray();
if (buffer.length == 0) {
System.err.println("warning: " + gifFile + " is zero-length");
return null;
}
return new ImageIcon(buffer);
}
/**
* Convert an input stream to an bgr spectrum image
*
* @param file the file to convert
* @return the input stream to convert
*/
public INDArray toBgr(File file) {
try {
BufferedInputStream bis = new BufferedInputStream(new FileInputStream(file));
INDArray ret = toBgr(bis);
bis.close();
return ret;
} catch (IOException e) {
throw new RuntimeException(e);
}
}
// Take a tree of files starting in a directory in a zip file
// and copy them to a disk directory, recreating the tree.
private int unpackZipFile(
File inZipFile, String directory, String parent, boolean suppressFirstPathElement) {
int count = 0;
if (!inZipFile.exists()) return count;
parent = parent.trim();
if (!parent.endsWith(File.separator)) parent += File.separator;
if (!directory.endsWith(File.separator)) directory += File.separator;
File outFile = null;
try {
ZipFile zipFile = new ZipFile(inZipFile);
Enumeration zipEntries = zipFile.entries();
while (zipEntries.hasMoreElements()) {
ZipEntry entry = (ZipEntry) zipEntries.nextElement();
String name = entry.getName().replace('/', File.separatorChar);
if (name.startsWith(directory)) {
if (suppressFirstPathElement) name = name.substring(directory.length());
outFile = new File(parent + name);
// Create the directory, just in case
if (name.indexOf(File.separatorChar) >= 0) {
String p = name.substring(0, name.lastIndexOf(File.separatorChar) + 1);
File dirFile = new File(parent + p);
dirFile.mkdirs();
}
if (!entry.isDirectory()) {
System.out.println("Installing " + outFile);
// Copy the file
BufferedOutputStream out = new BufferedOutputStream(new FileOutputStream(outFile));
BufferedInputStream in = new BufferedInputStream(zipFile.getInputStream(entry));
int size = 1024;
int n = 0;
byte[] b = new byte[size];
while ((n = in.read(b, 0, size)) != -1) out.write(b, 0, n);
in.close();
out.flush();
out.close();
// Count the file
count++;
}
}
}
zipFile.close();
} catch (Exception e) {
System.err.println("...an error occured while installing " + outFile);
e.printStackTrace();
System.err.println("Error copying " + outFile.getName() + "\n" + e.getMessage());
return -count;
}
System.out.println(count + " files were installed.");
return count;
}
/**
* Reads color table as 256 RGB integer values
*
* @param ncolors int number of colors to read
* @return int array containing 256 colors (packed ARGB with full alpha)
*/
protected int[] readColorTable(int ncolors) {
int nbytes = 3 * ncolors;
int[] tab = null;
byte[] c = new byte[nbytes];
int n = 0;
try {
n = in.read(c);
} catch (IOException e) {
}
if (n < nbytes) {
status = STATUS_FORMAT_ERROR;
} else {
tab = new int[256]; // max size to avoid bounds checks
int i = 0;
int j = 0;
while (i < ncolors) {
int r = ((int) c[j++]) & 0xff;
int g = ((int) c[j++]) & 0xff;
int b = ((int) c[j++]) & 0xff;
tab[i++] = 0xff000000 | (r << 16) | (g << 8) | b;
}
}
return tab;
}
/** Reads a single byte from the input stream. */
protected int read() {
int curByte = 0;
try {
curByte = in.read();
} catch (IOException e) {
status = STATUS_FORMAT_ERROR;
}
return curByte;
}
private static byte[] getFileAsBytes(String path) throws IOException {
int len = 0;
int totalLen = 0;
Object streamOrError = FileManager.getInputStream(path, false, null, null);
if (streamOrError instanceof String) {
LogPanel.log((String) streamOrError);
return null;
}
byte[] buf = new byte[1024];
byte[] bytes = new byte[4096];
BufferedInputStream bis = new BufferedInputStream((InputStream) streamOrError);
while ((len = bis.read(buf)) > 0) {
totalLen += len;
if (totalLen >= bytes.length)
bytes = ArrayUtil.ensureLength(bytes, totalLen * 2);
System.arraycopy(buf, 0, bytes, totalLen - len, len);
}
bis.close();
buf = new byte[totalLen];
System.arraycopy(bytes, 0, buf, 0, totalLen);
return buf;
}
public Image getImage(String sImage) {
Image imReturn = null;
try {
if (jar == null) {
imReturn = this.toolkit.createImage(this.getClass().getClassLoader().getResource(sImage));
} else {
//
BufferedInputStream bis = new BufferedInputStream(jar.getInputStream(jar.getEntry(sImage)));
ByteArrayOutputStream buffer = new ByteArrayOutputStream(4096);
int b;
while ((b = bis.read()) != -1) {
buffer.write(b);
}
byte[] imageBuffer = buffer.toByteArray();
imReturn = this.toolkit.createImage(imageBuffer);
bis.close();
buffer.close();
}
} catch (IOException ex) {
}
return imReturn;
}
/**
* Reads GIF image from stream
*
* @param BufferedInputStream containing GIF file.
* @return read status code (0 = no errors)
*/
public int read(BufferedInputStream is) {
init();
if (is != null) {
in = is;
readHeader();
if (!err()) {
readContents();
if (frameCount < 0) {
status = STATUS_FORMAT_ERROR;
}
}
} else {
status = STATUS_OPEN_ERROR;
}
try {
is.close();
} catch (IOException e) {
}
return status;
}
/**
* Reads next variable length block from input.
*
* @return number of bytes stored in "buffer"
*/
protected int readBlock() {
blockSize = read();
int n = 0;
if (blockSize > 0) {
try {
int count = 0;
while (n < blockSize) {
count = in.read(block, n, blockSize - n);
if (count == -1) break;
n += count;
}
} catch (IOException e) {
}
if (n < blockSize) {
status = STATUS_FORMAT_ERROR;
}
}
return n;
}
/**
* Loads PNG files and returns the result as an int[][]. The only PNG formats permitted are those
* with up to 256 grays (including simple black and white) or indexed colors from an up to
* 256-sized color table. Each integer value represents the gray level or the color table index
* value of the pixel. The Y dimension is not flipped.
*/
public static int[][] loadPNGFile(InputStream str) throws IOException {
// read the bytes into a byte array
BufferedInputStream stream = new BufferedInputStream(str);
ArrayList list = new ArrayList();
int count = 0;
while (true) {
byte[] buffer = new byte[16384 * 16];
int len = stream.read(buffer);
if (len <= 0) // all done
break;
else if (len < buffer.length) {
byte[] buf2 = new byte[len];
System.arraycopy(buffer, 0, buf2, 0, len);
buffer = buf2;
}
count += len;
list.add(buffer);
}
byte[] data = new byte[count];
int cur = 0;
for (int i = 0; i < list.size(); i++) {
byte[] b = (byte[]) (list.get(i));
System.arraycopy(b, 0, data, cur, b.length);
cur += b.length;
}
// Next convert the byte array to a buffered image
BufferedImage image = ((ToolkitImage) (new ImageIcon(data).getImage())).getBufferedImage();
// Is the color model something we can use?
int type = image.getType();
if (type == BufferedImage.TYPE_BYTE_BINARY || type == BufferedImage.TYPE_BYTE_GRAY) {
int w = image.getWidth();
int h = image.getHeight();
int[][] result = new int[w][h];
// obviously this could be done more efficiently
for (int i = 0; i < w; i++)
for (int j = 0; j < h; j++) result[i][j] = (image.getRGB(i, j) & 0xFF);
return result;
} else if (type == BufferedImage.TYPE_BYTE_INDEXED) {
Raster raster = image.getRaster();
if (raster.getTransferType() != DataBuffer.TYPE_BYTE) // uh oh
throw new IOException("Input Stream must contain an image with byte data if indexed.");
byte[] pixel = new byte[1];
int w = image.getWidth();
int h = image.getHeight();
int[][] result = new int[w][h];
// obviously this could be done more efficiently
for (int i = 0; i < w; i++)
for (int j = 0; j < h; j++) {
result[i][j] = ((byte[]) (raster.getDataElements(i, j, pixel)))[0];
if (result[i][j] < 0) result[i][j] += 256;
}
return result;
}
// else if (type == TYPE_USHORT_GRAY) // at present we don't handle shorts
// {
// }
else
throw new IOException(
"Input Stream must contain a binary, byte-sized grayscale, or byte-sized indexed color scheme: "
+ image);
}
